20913111

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2579}}^1$

素因数の和:2655

約数の個数: 24

約数和(自身を含む): 32600880

約数和(自身を除く): 11687769

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 477, 901, 2579, 2703, 7737, 8109, 23211, 43843, 131529, 136687, 394587, 410061, 1230183, 2323679, 6971037, 20913111]

約数ペア:

[(1, 20913111), (3, 6971037), (9, 2323679), (17, 1230183), (51, 410061), (53, 394587), (153, 136687), (159, 131529), (477, 43843), (901, 23211), (2579, 8109), (2703, 7737)]